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[Leo] Nareul nochigi sirheo
Nareul deo mangchigi sirheo
[Ken] Kkeutnado kkeutnaji annneun gieoge
Igil jasini nan eobseo
I don’t want to let go of myself
I don’t want to ruin myself anymore
Memories that aren’t ending even when it’s over
I have no confidence to win over it
It's kind of saying that this person can't continue on with this type of love. This love is corrupting him, making himself lose focus, and risk ruining himself. But the memories that he has with his love keep replaying and he's not sure if he can really let go of her.